Grease is a solid or semi-solid substance that consists of petroleum derivatives and soap (or a combination of several soaps), and its use is for special purposes such as reducing noise and vibration and smooth operation in some devices such as gears, the design of machine bushings and bearings and....
One of the reasons for using grease is not to use oil in some places (wheel bearings) for lubrication, in fact, the semi-solid nature of grease makes it remain in these places and does not flow and does not come out of the part.
What has a great effect on the type of application of greases is the soapy base that forms the grease, which provides us with the combination with the base oil and additives of the desired product.
